conventional pipe thread lathe mainly designed to process kinds of internal and external pipe threads including metric, inch, module, DP and taper threads, as well as having common functions of normal lathe such as processing the inner bore and end face of shafts and disks. The series lathe machine is widely used in industries including petroleum exploring, coal and mineral mining, chemical piping and geological prospection. It is high efficiency equipment in processing and repairing drilling pipe, drilling rod, thread coupling etc.